The Power Of Three

The third series, titled Warriors: Power of Three, was released from 2007 to 2009, and includes: The Sight, Dark River, Outcast, Eclipse, Long Shadows, and Sunrise. The plot focuses on the prophecy, "there will be three, kin of your kin, who hold the power of the stars in their paws", which was given to Firestar in Firestar's Quest by Skywatcher before dying. The series follows three young cats named Hollyleaf, Jayfeather, and Lionblaze (originally named Hollykit, Jaykit, and Lionkit, then renamed Hollypaw, Jaypaw, and Lionpaw) who are Firestar's grandkits which makes them the cats of the prophecy. Jayfeather is blind, but soon discovers he has a unique power, as does one of his siblings. Jayfeather has the power to feel emotions and memories coming off of other cats and walk in their dreams, where he is then able to see. Lionblaze has the power to never get hurt in a fight. Hollyleaf does not have any power, and is later revealed not to be the third cat foretold in the prophecy.
In Dark River the siblings search for missing WindClan kits with help from two WindClan apprentices, Breezepaw and Heatherpaw. While searching, the tunnels flood, almost killing them, however, everyone eventually gets out safely. In Outcast, two cats from the Tribe request help to drive away a group of loners that are stealing prey from the Tribe. The Clans send a patrol to help. There, Jayfeather learns that the Tribe came from the lake, and tells his siblings about the prophecy.
In Eclipse, a loner cat called Sol warns Jayfeather and Leafpool that the sun will disappear. During a battle involving all four Clans, the sun disappears in an eclipse. Sol then persuades ShadowClan to lose faith in StarClan in Long Shadows. Jayfeather, Lionblaze and Hollyleaf fake a sign from StarClan to convince Blackstar that StarClan is real and should be followed. Sol is banished and apparently disappears.
Jayfeather, Hollyleaf, and Lionblaze learn in Sunrise that their true parents are Leafpool and Crowfeather, not Squirrelflight and Brambleclaw. During a Gathering, Hollyleaf reveals this to all the Clans, and then runs away into the tunnels because she could not stand the fact that her birth was against the warrior code, which meant a lot to her. The tunnels then collapsed on Hollyleaf which trapped and/or killed her. The book ends with Jayfeather realizing that Hollyleaf was never meant to be part of the Three, and that either Dovekit or Ivykit, grandkits of Firestar's nephew, Cloudtail, is meant to be the third cat of the prophecy.